Bobbin-stripping machine.



J. D. SHARPLES & T. OROWE.

BOBBIN STRIPPING MACHINE.

APPLICATION FILED APR.1B,1914.

Patented Dec. 8, 1914.

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BOBBIN STRIPPING MACHINE.

APPLICATION TILED APR.18,1914. 1,1 19,993. Patented Dec. 8, 1914.

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J. D. SHARPLES & T. CROWB.

BOBBIN STRIPPING MACHINE. APPLICATION FILED APR.18,1914.

Patented Dec. 8, 1914.

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ATENT UFFICE.

JOHN D. SHARPLES AND THOMAS CBOXVE, OF TAFTVILLE, CONNECTICUT, ASSIGNORS 0F ONE-THIRD TO FRANK B. RICKETSON, 0F TAF'IVILLE, CONNECTICUT.

BOBBIN-STRIPIEING MACHINE.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed April 18, 1914. Serial No. 832,749.

To all whom it may concern:

Be it known that we, JOHN D. SHARPLES and THOMAS Crown, both citizens of the United States, and residents of Taftville, in the county of New London and State of Connecticut, have jointly invented certain new and useful Improvements in Bobbin- Stripping Machines, which improvements are fully set forth and described in the following specification, reit'erence being had to. the accompanying drawings.

This invention relates to machines for antomatically stripping the tail-ends or unused portions of yarns remaining on spent bobbins, particularly bobbins ot' the straight (non-tapered) type used commonly in the operations of spinning, doubling and tw sting, and in fact, in nearly all so called spooling operations; the purpose of this present invention being to provide reasonably simple mechanism by means of which such tail ends may be automatically, rapidly and elfectively, stripped from the bobbins without resorting to the cutting or unrolling of said tail-ends and without cutting, scratching, or in any way, or degree, injuring the bobbins.

In order to explain our said invention clearly, We have provided the annexed drawings in which Figures 1 and 2 are side elevations of a stripping machine embodying our present improvements; said views being taken from opposite sides of said machine. Fig. 3 is a plan view of said machine. Fig. l 1s an elevation as seen from the right hand end of the machine of Fig. 1, and Fig. 5 is a similar view of the left hand end of said machine.

Figs. 6 and 7 are, respectively, side and plan views of novel combing devices specially provided for removing lint from theteeth of the stripper apron as well as for preventing any accumulation of lint on said combing devices. Figs. 8 and 9 are, respectively, plan and side views of mechanism for automatically locating the bobbins in proper successive position on an endless conveyor which we will refer to with more particularity later. Fig. 10 is a detached view of the grooved pulley 3% under which the stripper apron 83, ot' the type shown in Figs. 1 to 7 passes. Fig. 11 is a relatively enlarged plan view of the apron by means of which the bobbins are conveyed to the stripping mechanism, illustrating also novel means for locking what we term our deflector plate in its operative position until such time as the bobbin is in position to be raised into engagement with the stripping mechanism. In Fig. 12 we have illustrated said deflector plate in side elevation and have also shown portions of cooperating devices, to wit, the bobbing-conveyor belt, the stripping apron, and of a counterweighted roll by means of which the said conveyer belt is forced upward, in order to move the bobbin into position to be stripped by the toothed stripping apron. Fig. 13 shows face and edge views of a stripper of endless apron form adapted to be run on two separated pulleys, as in the machine of Figs. 1 to '1', and in Fig. 14 we have illustrated a modified form of said endless stripper apron which is adapted to run on a single pulley.

Briefly described, our said machine consists, essentially, of a moving stripping apron including flexible bristles, or wires of the caribclothing type, and means for suitably feeding bobbins into position to be brushed longitudinally by the said moving bristles or wires with sullicient force to separate or break the fiber or staple of the tail ends on said bobbins but without abrading the bobbins. As the bobbins are fed farther forward (out of engagement, with the stripping mechanism), the said tail ends, having been severed at one point in each coil, drop from the bobbin while the said bobbin is carried forward somewhat farther and is dropped onto the floor, or into a suitable receptacle (see Fig. 1).

Referring now to the annexed drawings, the numeral 10 indicates an elongated machine bed or table which is suitably supported by legs 111f2 and is recessed longitudinally to receive an endless conveyor belt 13, which belt is supported by pulleys l4 and 15 that are journaled in boxes secured to the said legs 11 and 12. The belt 13 is located somewhat below the top of the table 10 thus providing side walls for the depression in which the conveyor belt 13 travels; the said side walls serving to retain the bobbins in longitudinal alinement with the conveyor belt while the belt is carrying the bobbins forward into engagement with the stripper mechanism and, in order to suitably space the bobbins apart, we have secured to the said belt studs, bosses, or the like projections 16 of sufficient height to engage the end of the bobbin and carry it along with the belt. In order to prevent the bobbins from over-riding each other and to prevent them from being carried to the stripping mechanism with irregularity, we provide a yielding stop, or, more properly, a checking plate 17 which is best understood by reference to Figs. 8 and 9, in which it will be seen that said plate is hinged to stands 18l9 secured to the opposite sides of the table 10, the free edge portion of the plate being held yieldingly, in contact with the table 10 by means of a spring 20 attached to the said plate, or to an arm 21 which is secured to the pivot or journal to which the checking plate 17 is secured. If, by oversight, or carelessness, on the part of the machine attendant (or, if the bobbins are not properly located on belt 13 by automatic feeding mechanism) the plate 17 will check said bobbin until the next projection 16 comes along and engages the rear end of the bobbin; thus picking up the bobbin, so to speak, and carrying it forward with the belt, with force enough to raise the plate 17 until the bobbin is carried under and beyond said plate, when the latter will be forced to its normal (lowered) position by the spring 20. Thus it will be understood that the bobbins will be automatically located between the projections 16 and spaced apart with regularity and certainty. The shaft which carries the pulley 14 carries also a pulley 22 which is driven by a belt 23 which, in turn, is driven by a relatively smaller pulley 24 secured to the main driving shaft 25. Secured to the said driving shaft 25 is a larger pulley 26, as here shown, which is connected by a belt 27 with a pulley 28 mounted on a shaft 29 which latter is journaled in stands 3031 secured to the table 10.

Secured to the shaft 29, between the stands 3031, is a pulley 32 over which runs an endless apron 33 which passes downward and around a scored pulley 34; the said apron 33 being provided with brush-like teeth 35 like, or substantially like, cardclothing teeth, the said teeth being preferably arranged in separated blocks, as shown in the drawings. The lowest portions of the said stripper teeth 35 are so located that the points of said teeth will just engage the perimeter of a bobbin, as the said bobbin is fed along under the stripper teeth (see Fig. 12 in which the bobbin is shown, in dotted lines, in position to be stripped of its tail ends). vVhen the bobbins are approaching the stripper apron it is desirable that they shall be lowered until the front end portion of each bobbin is directly under the stripper and then be raised bodily into position to be engaged by the rapidly moving teeth 35, as it sometimes happens that the bobbins are fed to the stripper with the flanged end first, in which event the wire teeth would scratch, or otherwise injure the said heads but, by first lowering the bobbins and then raising them just as their flanges have passed beyond the teeth 35, the said teeth engage and strip only the barrel or body portions of the bobbins. In order to thus lower and raise the bobbins, we have provided novel automatic mechanism which we will now describe, referring particularly to Figs. 1, 2, 3, 11 and 12 of the drawings. Adjacent to the stripper apron 33 is a plate 36 which is pivoted to stands 37 and has secured to the opposite sides of its free edge portion, downwardly extending plates 3839 which are provided with openings adapted to receive dowel pins 40-41 which extend laterally from the opposing sides of arms 42-43 which are secured to blocks 44-45, in such manner that the said arms. may be moved laterally in order that the pins 40-41 may enter, or be withdrawn from the openings in plates 3839. Normally, the said arms are in approximately the positions shown in full lines in Fig. 11; that is to say, the free ends of said arms are in the path of the approaching bobbin and the pins 40-41 are in the plates 38--39 and are looking the deflector plate 36 in its lowest position, as in full lines Fig.12. When a bobbin approaches the stripping apron, it engages the normally depressed plate 36 and is deflected with belt 13) downward, passing under the then rigid plate, and moves forward until its front end has just passed the lowest portion of the stripper teeth 35 when the said front end of the bobbin engages, and spreads apart, the free ends of arms 4243 thus withdrawing the pins 4041 from looking engagement with the plates 38-39 thus leaving the deflector plate free to rise to the position shown in dotted lines in Fig. 12 and permitting the bobbin to rise into position to be acted upon by the stripper teeth 35. In order to thus raise the bobbin, we provide a roll 46 which is hung in one end of a leverarm 47 which is over-balanced by a weight 48 that is adjustably hung on the other end portion of said lever arm. So soon as the bobbin passes beyond the arms 42,43 said arms are returned to their normal positions either by the flexing of the material of which they are made or by a suitable spring, thus moving the pins 40-41 into their respective plates 3839 and locking the deflector plate 36 in its lowest position, ready to defleet the next approaching bobbin.

In order to remove from the teeth 35 of the stripper apron anylint or fiber that may be inclined to gather thereon, we provide a comber roll 49 which revolves in a direction opposite to that of the stripper apron 35 and thus combs off such lint or fiber and, in order to remove any accumulation of lint on the comber roll 49 we have provided a vibrator frame 50 formed, as here shown, of wire secured to a cylinder 51 which is loosely mounted on an eccentric shaft 52 in such manner that the revolution of said eccentric shaft will cause the frame 50 to vibrate rap idly, in and out, among the teeth of the comber roll 49 and thus dislodge and remove all lint from the teeth of said comber roll. To permit the frame 50 to vibrate and also to oscillate slightly, we have provided a stationary wire frame 53 and have formed the frame 50 with an extension 54 which is loosely looped around the said fixed frame 53, as will be understood by reference to Figs. 6 and 7 of the drawings. The eccentric shaft 52 is driven by belt 55 from a pulley 56 on the end of shaft 29 and the comber-roll 49 is driven by a belt 57 which is driven by a pulley on the main driving shaft The pulley 34., which supports the lower portion of the stripper apron 33, is scored, or concaved, as seen in Fig. 10 in order that the said apron may yield as its teeth engage a bobbin to conform to the contour of the bobbin, thus preventing the harsh contact with (and overcoming all tendency to scratch or in me) said bobbin as the latter is being stripped.

While we prefer to mount the stripper apron 33 on a lower and an upper pulley, as shown and thus far described, said apron may be mounted on a single pulley 34 as illustrated in Fig. 14, the said pulley being concaved as at 349.

Having thus described our invention, we

claim as new and wish to secure by Letters Patent 2-- 1. Bobbin stripping mechanism, comprising a traveling stripper formed of yielding teeth, and means for feeding a bobbin into engagement with said teeth at a speed different from the traveling speed of the said stripper teeth.

2. Bobbin stripping mechanism, comprising a traveling stripper including yielding teeth, and means for feeding a bobbin into engagement with said teeth at a relatively slower movement than the traveling movementof the stripper teeth.

3. In a bobbin stripping machine, in combination,, a traveling stripper including a brush with yielding teeth, said brush being mounted on a concaved pulley, and means for feeding a bobbin into engagement with said stripper.

4. In a bobbin stripping machine, in combination, a traveling stripper consisting of a brush havingyielding teeth, means for feeding a bobbin into coincidence with said stripper and means for moving said bobbin into engagement with said stripper.

In a bobbin stripping machine, in combination, a traveling stripper consisting of a brush having yielding teeth, means for feeding a bobbin into coincidence with said brush, means for deflecting the bobbin before the latter reaches the brush, and means for moving said bobbin laterally into operative engagement with said brush.

(3. In a bobbin stripping machine, in com bination, a traveling stripper including yielding teeth, means for feeding bobbins into operative engagement with said stripper, and means for suitably spacing said bobbins apart on said feeding means. 7. In a bobbin stripping machine, in combination a stripper including yielding teeth, a traveling belt, having fixed proJecting studs suitably spaced apart, for feeding bobbins to said stripper teeth, and means consisting of a yielding plate, located in the path of the bobbins, for checking said bobbins and for positioning the same on the said traveling belt.

8. In a bobbin stripping machine, in com bination a toothed stripper, means for actuating said stripper, and means for supporting said stripper at its edge portions only, whereby the mid-portion of said stripper may yield to conform to the contour of a bobbin.

9. In a bobbin stripping machine, in combination, a toothed stripper, means for actuating said stripper, means for supporting said stripper at its edge portions only, whereby the mid-portion of said stripper may yield to conform to the contour of a bobbin, and means for feeding bobbins into operative engagement with said stripper.

JOHN D. SI-IARPLES. THOMAS GROWE.

Witnesses:

FRANK H. ALLEN, FRANK B. R-IcKn'rsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

